121422820 has 24 divisors (see below), whose sum is σ = 255225600. Its totient is φ = 48523872.

The previous prime is 121422817. The next prime is 121422869. The reversal of 121422820 is 28224121.

It is a junction number, because it is equal to n+sod(n) for n = 121422791 and 121422800.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26671 + ... + 30889.

It is an arithmetic number, because the mean of its divisors is an integer number (10634400).

Almost surely, 2^121422820 is an apocalyptic number.

121422820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121422820 is an abundant number, since it is smaller than the sum of its proper divisors (133802780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121422820 is a wasteful number, since it uses less digits than its factorization.

121422820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667 (or 5665 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 121422820 is about 11019.2023304775. The cubic root of 121422820 is about 495.1841915626.

Adding to 121422820 its reverse (28224121), we get a palindrome (149646941).

The spelling of 121422820 in words is "one hundred twenty-one million, four hundred twenty-two thousand, eight hundred twenty".